We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Mitigation of multipath effect in GNSS short baseline positioning by the multipath hemispherical map.
- Authors
Dong, D.; Wang, M.; Chen, W.; Zeng, Z.; Song, L.; Zhang, Q.; Cai, M.; Cheng, Y.; Lv, J.
- Abstract
Multipath is one major error source in high-accuracy GNSS positioning. Various hardware and software approaches are developed to mitigate the multipath effect. Among them the MHM (multipath hemispherical map) and sidereal filtering (SF)/advanced SF (ASF) approaches utilize the spatiotemporal repeatability of multipath effect under static environment, hence they can be implemented to generate multipath correction model for real-time GNSS data processing. We focus on the spatial-temporal repeatability-based MHM and SF/ASF approaches and compare their performances for multipath reduction. Comparisons indicate that both MHM and ASF approaches perform well with residual variance reduction (50 %) for short span (next 5 days) and maintains roughly 45 % reduction level for longer span (next 6-25 days). The ASF model is more suitable for high frequency multipath reduction, such as high-rate GNSS applications. The MHM model is easier to implement for real-time multipath mitigation when the overall multipath regime is medium to low frequency.
- Subjects
MULTIPATH channels; GLOBAL Positioning System; BLIND channel identification (Telecommunications); SIGNAL filtering; INFORMATION filtering
- Publication
Journal of Geodesy, 2016, Vol 90, Issue 3, p255
- ISSN
0949-7714
- Publication type
Article
- DOI
10.1007/s00190-015-0870-9